Alert archive / New York / Flash Flood Warnings in 2021
Flash Flood Warning 50, NWS Binghamton, NY
NWS Binghamton, NY issued this flash flood warning at Aug 18, 2021, 10:40 PM EDT for 4 counties in New York. It was in force for 5 hr. 6 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 18, 2021, 10:40 PM EDT (02:40 UTC)
- Expired
- Aug 19, 2021, 4:00 AM EDT
- In force
- 5 hr
- Issued by
- NWS Binghamton, NY
- Area
- Storm-based polygon
- Flood severity
- None
Counties Cayuga County, NY, Seneca County, NY, Tompkins County, NY, Yates County, NY
The radar
The Binghamton radar (KBGM), 92 km from the middle of the area, began a volume at 02:42 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 18, 10:58 PM EDT | FLASH FLOOD | Ovid, NY | STRUCTURAL COLLAPSE DUE TO FLOODING. NO OTHER DETAILS AT THIS TIME. |
| Aug 18, 11:01 PM EDT | FLASH FLOOD | Ovid, NY | NUMEROUS ROADS FLOODED. |
| Aug 18, 11:58 PM EDT | FLASH FLOOD | 1 Nnw Himrod, NY | NUMEROUS ROADS FLOODED. |
| Aug 18, 11:59 PM EDT | FLASH FLOOD | Milo Center, NY | ROADS FLOODED. |
| Aug 19, 12:00 AM EDT | FLASH FLOOD | 1 Wsw Branchport, NY | ROADS FLOODED. |
| Aug 19, 1:10 AM EDT | FLASH FLOOD | Moravia, NY | FLOODING IN THE VILLAGE OF MORAVIA. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 2.7 hours before the alert went out and 153 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 11 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 638 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -11 m²/s²
- 0-3 km storm-relative helicity
- 17 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
908
WGUS51 KBGM 190240
FFWBGM
NYC011-099-109-123-190545-
/O.NEW.KBGM.FF.W.0050.210819T0240Z-210819T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Binghamton NY
1040 PM EDT Wed Aug 18 2021
The National Weather Service in Binghamton has issued a
* Flash Flood Warning for...
Southwestern Cayuga County in central New York...
Seneca County in central New York...
North Central Tompkins County in central New York...
Yates County in central New York...
* Until 145 AM EDT.
* At 1040 PM EDT, Doppler radar indicated heavy rain across the
warned area. Between 1 and 2.5 inches of rain have fallen. The
expected rainfall rate is 1 to 1.5 inches in 1 hour. Additional
rainfall amounts of 2 to 3 inches are possible in the warned area.
Flash flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by heavy rain.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Auburn, Seneca Falls, Waterloo, Penn Yan, Dundee, Romulus, Owasco,
Sennett, Starkey, Benton, Fleming, Covert, Locke, Genoa, Ledyard,
Potter, Middlesex, Moravia, Montezuma and Union Springs.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to higher ground now. Act quickly to protect your life.
&&
LAT...LON 4276 7731 4276 7697 4301 7696 4303 7649
4301 7649 4300 7647 4285 7645 4285 7636
4278 7628 4264 7627 4255 7669 4254 7690
4248 7696 4248 7710 4251 7714 4258 7714
4258 7737 4270 7735
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-1.5 INCHES IN 1 HOUR
$$
NICOSIA2 follow-up statements
046
WGUS71 KBGM 190409
FFSBGM
Flash Flood Statement
National Weather Service Binghamton NY
1209 AM EDT Thu Aug 19 2021
NYC011-099-109-123-190545-
/O.CON.KBGM.FF.W.0050.000000T0000Z-210819T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cayuga NY-Seneca NY-Tompkins NY-Yates NY-
1209 AM EDT Thu Aug 19 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 145 AM EDT EARLY THIS
MORNING FOR SOUTHWESTERN CAYUGA, SENECA, NORTH CENTRAL TOMPKINS AND
YATES COUNTIES...
At 1209 AM EDT, Doppler radar indicated that the heavy rain has
shifted to southeast Cayuga County. The rain has become lighter
farther west across Seneca and Yates counties. Between 1.5 and 3
inches of rain have fallen. The expected rainfall rate is up to 1
inch in 1 hour, especially in southern Cayuga County. Additional
rainfall amounts of 1 to 2 inches are possible in this area. Flash
flooding is already occurring in southern Yates County and around
Ovid in Seneca County.
HAZARD...Flash flooding caused by heavy rain.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Auburn, Seneca Falls, Waterloo, Penn Yan, Dundee, Romulus, Owasco,
Sennett, Starkey, Benton, Fleming, Covert, Locke, Genoa, Ledyard,
Potter, Middlesex, Moravia, Montezuma and Union Springs.
The heavy rain could cause flooding along the Owasco Inlet and in
the Village of Moravia.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to higher ground now. Act quickly to protect your life.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 4276 7731 4276 7697 4301 7696 4303 7649
4301 7649 4300 7647 4285 7645 4285 7636
4278 7628 4264 7627 4255 7669 4254 7690
4248 7696 4248 7710 4251 7714 4258 7714
4258 7737 4270 7735
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1 INCH IN 1 HOUR
$$
NICOSIA795
WGUS51 KBGM 190536
FFWBGM
NYC011-099-109-123-190800-
/O.EXT.KBGM.FF.W.0050.000000T0000Z-210819T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Binghamton NY
136 AM EDT Thu Aug 19 2021
The National Weather Service in Binghamton has extended the
* Flash Flood Warning for...
Southwestern Cayuga County in central New York...
Seneca County in central New York...
North Central Tompkins County in central New York...
Yates County in central New York...
* Until 400 AM EDT.
* At 136 AM EDT, Doppler radar indicated that the heaviest rain was
tapering off across the warned area. Between 1.5 and 3 inches of
rain have fallen. Additional rainfall amounts up to 1 inch are
possible in the warned area. Flash flooding is already occurring.
HAZARD...Flash flooding caused by heavy rain.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Auburn, Seneca Falls, Waterloo, Penn Yan, Dundee, Romulus, Owasco,
Sennett, Starkey, Benton, Fleming, Covert, Locke, Genoa, Ledyard,
Potter, Middlesex, Moravia, Montezuma and Union Springs.
Numerous roads are still flooded in the warned area. The Owasco
Inlet near Moravia is expected to crest between 9 and 9.5 feet
around 3 am. Flooding of roads occurs in the village of Moravia at
this level.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to higher ground now. Act quickly to protect your life.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 4276 7731 4276 7697 4301 7696 4303 7649
4301 7649 4300 7647 4285 7645 4285 7636
4278 7628 4264 7627 4255 7669 4254 7690
4248 7696 4248 7710 4251 7714 4258 7714
4258 7737 4270 7735
FLASH FLOOD...RADAR INDICATED
$$
NICOSIAThe office that day
Everything else NWS Binghamton, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 8:10 PM EDT | Areal Flood Advisory | BGM | Cayuga, Cortland, Madison, Oneida, Onondaga, Seneca and 2 more | 6 hr |
| Aug 18, 10:28 PM EDT | Flash Flood Warning | BGM | Steuben | 5 hr |
| Aug 19, 12:35 AM EDT | Flash Flood Warning | BGM | Cortland, Onondaga | 4 hr |
| Aug 19, 12:41 AM EDT | Areal Flood Advisory | BGM | Delaware, Sullivan | 2 hr |
| Aug 19, 2:14 AM EDT | Areal Flood Advisory | BGM | Madison, Oneida, Onondaga | 106 min |
| Aug 19, 2:52 AM EDT | River Flood Warning | BGM | Tompkins | 10 days |
| Aug 19, 3:44 AM EDT | Areal Flood Warning | BGM | Steuben | 6 hr |
| Aug 19, 4:02 AM EDT | Areal Flood Warning | BGM | Cayuga | 3 hr |
| Aug 19, 4:44 AM EDT | River Flood Warning | BGM | Steuben | 3 hr |
| Aug 19, 4:48 AM EDT | River Flood Warning | BGM | Chemung | 11 hr |
| Aug 19, 5:07 AM EDT | Areal Flood Warning | BGM | Onondaga | 5 hr |
| Aug 19, 5:29 AM EDT | Areal Flood Advisory | BGM | Oneida | 3 hr |
| Aug 19, 5:35 AM EDT | River Flood Warning | BGM | Onondaga | 4 hr |
| Aug 19, 6:12 AM EDT | Flash Flood Warning | BGM | Oneida | 3 hr |
| Aug 19, 6:59 AM EDT | Areal Flood Warning | BGM | Cayuga | 11 hr |
| Aug 19, 8:02 AM EDT | Areal Flood Warning | BGM | Madison, Oneida, Onondaga | 6 hr |
| Aug 19, 9:22 AM EDT | Areal Flood Warning | BGM | Oneida | 6 hr |
| Aug 19, 9:53 AM EDT | River Flood Warning | BGM | Chemung | 6 hr |
| Aug 19, 11:12 AM EDT | River Flood Warning | BGM | Madison, Oneida | 10 hr |
| Aug 19, 3:12 PM EDT | Areal Flood Warning | BGM | Oneida | 9 hr |
Nearby
Flash Flood Warnings in New York, 2021Every flash flood warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.